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Date: Wed, 25 Sep 2013 12:02:20 -0600
From: Bjorn Helgaas <bhelgaas@google.com>
To: Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH v2 2/6] PCI/MSI: Factor out pci_get_msi_cap() interface
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Cc: Joerg Roedel <joro@8bytes.org>, "x86@kernel.org" <x86@kernel.org>,
 "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
 "linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
 Alexander Gordeev <agordeev@redhat.com>, Jan Beulich <JBeulich@suse.com>,
 "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
 linuxppc-dev@lists.ozlabs.org, Ingo Molnar <mingo@kernel.org>
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On Fri, Sep 20, 2013 at 07:27:36AM -0500, Tejun Heo wrote:
> On Fri, Sep 20, 2013 at 10:24:59AM +0200, Alexander Gordeev wrote:
> > * Make pci_enable_msix() return 0/-errno
> 
> My choice would be this one.

I agree; it sounds like you've identified several bugs related to the
current confusing interface, so fixing that seems like the first step.

I hope we can avoid adding a plethora of interfaces to address unusual
corner cases.  But if we do the above and it turns out not to be enough,
we can always extend it later.

Bjorn